Casing head for oil wells



16, ma l.. HA U B E R T. j u

CASING HEAD FOR OIL WELLS.

FILED JAN.19.1921. 2 SHEETS-SHEET s.

WITNESSES L. HAUBERT. CAS-ING HEAD FOR OIL WELLS.

man 11111.19. 1921.

Jan, 16,? 1923.

WITNESSES Patented dan, 1d, 1923.,

entran stares 1,442,4@4 PATENT LEO HAUBER'JI,` OF IBEGGS, OKLAHOMA,ASSIGNOR 0F ONE-THIRD TO JOE-IN C.

BENNETT AND ONE-THIRD TO JOHN A. WOLFE, BOTH F TULSA, OKLAHOMA.

casina Haan non oirJ WELLS.

Application filed January 19, 19.21. Serial No. 438,429.

To all whom t 'may concern Be it known that I, LEO HAUBERT, a citizen ofthe United States, residing at Begofs, in the county of Dkmulgee andState of klahoma, have invented new and useful lmprovementsin CasingHeads forv Oil llvells, of which the following .is a specification.

This invention has reference to casing heads for oil wells, and itsobject is to provide a casing head adapted to various sizes' of tubingand provided with a top which may be readily taken oit when the 'firstjoint of the tubing is applied, and whereby oil, which may flow out fromthe tubing when unscrewed will find its way back into the well or may bediverted intoa suitable reservoir to prevent waste.

ln accordance with the invention, the Ecasing head has 'a bore ofupwardly flaring contour, to receive spider devices seating 1n thecasing head and serving to sustain the weight of the tubing.

In conjunctionl with the casing head, and well tubin there 'is provideda device through w ich the tubing extends and which s designed to divertfluid which may be discharged from a joint of tubing when unscrewed fromthe tubing below it, thus protecting workmen from the outtlowing fluidand causing suchv fluid to flow ,back into the well or into .a suitablereservoir.

The invention will be from a consideration' of the following detaileddescription taken in connection with the accompanying drawings formingpart of this speciiication, with the understanding, however, that theinvention is not conined to any strict' conformity with the showing inthe drawings, but may be changed and modified so long as such changesand modiications mark no material departure from the salient features ofthe invention as expressed in the appended claims.

In the drawings:

Figure 1` is an elevation of a casing head v'constructed in accordancewith the invention, and showing some parts in section.

Figure 2 is a vertical' diametric section through the structure shown inFigure 1.

Figure 3 is a plan of the structure shown in Figure 2, but omitting thecasing head top.

Figure 4 is a view similar to Figure 2,

with a shallow groove 8.

but showing some parts removed and fluid delector in place.

Figure 5 is a plan view of the deflector. Figure 6 is a view similar toFigure 2, but showing the casing head top in place and a coupling of thetubing resting thereon. Figure 7 is a plan view of the structure shownin Figure 6, but with the casing top omitted.

Figure S is a plan view of a spider simthe -ilar to that shown in Figure2.

. 2, to receive a casing head 3, comprising a ring 4 threaded to screwonto the upper end of the casing. From the ring 4, there rises a flaringkhead 5, in the upper end of which there is produced an annular groove6, with a basic or flare portion 7, provided The groove 6 contains apacking ring 9 on which is seated a casing head top or cover 10, held inplace Aby set screws 11 extending through the best understood outer edgeof the casing head, whereby the cover may be securely fastened in place,or may be loosened for removal.

Where the ring l screws onto the casing 1, it isprovided with aninwardly directed flange 12, forming a ledge designed to supi portcertain structures. Seated on the ledge 12 is a spider 13, provided witha hub 14 and radial arms 15 and 16, the latter terminating in oppositelydirected lugs 17 conforming in flare to the inner wall of the flaringhead or extension. The lugs 17 are traversed by set screws 18, by meansor' which the spider is firmly held in position.

The hubr 14 is shown as traversed by a well tube 19 rising throughl thespider 13 and through the casing .head top 10, with the tubing supportedby any appropriate device, indicated in dotted lines at 20. Tappedthrough the sides of the casing head are pipes 21, whereby gas or thelike may be conveyed from the casing head to some point of disposal.There is another by bolts 18a'. The spider 22 has a basic plate 2 6 ofasize to rest upon the ledge 12 with interposed packing 27,l shown in Figure 6, whereby fluid discharged'from a removedtubing section is caughtin the re; ceptacle formedY by the spider 22 and the flaring walls ofthe casing head. By forming the bottom 26 of the spider 22 separatelyfrom the -bodyof the spider, and secur ing it in place by screws 28, a.gasket orA washer 29 is secured in place in the lower end-of the hub24,`so that the tubin 19 may be readily passed throught-.he gas et withthe latter hugging the tubing and at the same time permitting the usualtubing couplings 30 to pass through the gasket. By this arrangement,iuids may be caught in the casing head and conducted by way 'of pipes 21to some point of disposal, instead of permitting the iiuids to flow backinto the-well or to waste.

The spider22,l shown in Fig. 11, is a slightly modified form of -thespider 22, wherein the bottom 26a is made integral with the hub 24Cwhich is provided with a shoulder 24h against which the gasket .29 issecured.

The pipes 31 permit gas to be taken from the well to be used for fuel tofurnish power while pullingthe tubing and the gasket4 or washer 29 inthe lower end of the hub 24 is to hold the gas in the well while thetubing is being pulled and the gas Ataken from the well through thepipes 3&1, as stated. Sometimes oil will commence4 to liow through thecasing 1, while the tubing is being pulled, in which case the oil willgo through the pipes 31 of the casing head to a storage tank inrately inFig. 5.

stead of overflowing the derrick, as heretofore, and being wasted aswell as being dangerous'on account of catching fire from an adjacentboiler furnace, as sometimes occurs.

When the tubing is pulled, and a section is unscrewed from the nextlower one, workmen are often deluged by the escaping oil or otherliquid, and in order to prevent this there is provided a deflector 32shown sepa- The deiector comprises two members hinged togetherl at' oneside and furnished with handles 33 by means of which the two members ofthe' deflector may rbe spread open or closed together 'and when spreadopen are suliiciently separated to permit application sidewise to thetubing 19. To facilitate the application of the deflector,

- a spring 34 is lodged between the handlesl 33 and a layer of'felt 35or some other similar material is applied about that portion of thedeflector which grips the tubing.

ina-2,404

turned flange 37, so that when the pipe ortubing section is unscrewedand the )oil drops, the tendency will be to divert the oil toward theinterior of the casing head so lthat it will gravitate into the well.

The. deflector shown in the' drawing forms thegsubject matter of aseparate application filed by me January 19, 1921, Serial No. 438,430.

1. A casing head comprising a ring adapted tobe 'secured to the upperend of a well casing and provided with a Haring', rising extension, aclosure for the larger end of the extension, ducts leading from saidextension, and a spider having the ends of its arms seated on theflaring extensions of the ring.

2. A. casing head comprising a ring adapted to be secured to the upperend of a well casing and provided with a flaring, rising extension, aclosure for the larger end of the extension, ducts leading from said eX-tension, and a spider adapted to seat in the said extension and having ahub to be trav- L ersed by the well tubing.

3. A casing head comprising a ring adapted to be secured to the upperend of a well 'casing and provided with a fiaring, rising terminating inlugs for attachment to the inner wall ofthe extension.

V4f. A casing head for oil or gas Vwells, comprising a ring adapted tobe secured to the upper end of the well casing and provided with aHaring, rising extension having a seat at its upper end with a groove orrecess thereabout, a casing head top adapted to the seat and providedwith a'passage for the well tubing, and means for fastening thecasinghead top to the casing head within the groove or seat.

5. A casing head comprising a ring adapted to be secured to the upperend of a well casing and provided with a flaring, rising extension, aspider adapted to seat in the l flaring casing head and provided with ahub to be traversed by thewell tubing, ducts leading from the upwardextension of the casing head, a basic plate forming the bottom of theupward extension of the casing head above the ring, and a spider tovwhich `the basic plate is secured and provided with means for in turnsecuring said spiderto the casing head.

6. A casing head comprising a ring adaptedito be secured to the upperand of a well casing andprovided with a flaring, rising extension, aspider adapted to seat in the Lasagne f flaring casing head` a'ndprovided with a hub to be traversed by the Well tubing,- ducts leadingfrom the upward extension of the casing head, a basic plate forming thebottom of the upward extension of ,the casing head above the ring, and aspider `to which the basic plate is secured and provided with means forin turn securing said spider to the casing head, saidcasing head'alsobeing provided with a casing head top covering the casing head andprovided with means for securing it nplace.

7. A casing head, comprising a ring adapted to be secured-,to the upperend of a Well ture.,

LE() HUBERT.

